Lingual arch orthodontic appliance



FIG. 1 is a perspective view of one embodiment of a lingual arch orthodontic appliance design of this invention, depicting the top, front, and right side thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof, the bottom plan view thereof being a mirror image;

FIG. 4 is a right side elevational view thereof, the left side elevational view thereof being a mirror image;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a perspective view of another embodiment of a lingual arch orthodontic appliance design of this invention, depicting the bottom, front, and right side thereof;

FIG. 7 is a front plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a right elevational view thereof, with the left elevational view thereof a mirror image;

FIG. 10 is a top plan view thereof; and,

FIG. 11 is a rear elevational view thereof. 

The ornamental design for a lingual arch orthodontic appliance, as shown and described. 